The Uni-ball Shift Pipe Lock Mechanical Pencil has a unique shift and lock mechanism that allows you to protect the pencil tip during travels. The upper body shifts forward to create a body transformation as it protects the guide pipe and lead from breakage. The pencil also has a nice weight and features a low center of gravity to allow stable writing and reduce hand fatigue. The finely designed grip is etched with many grooves to offer a non-slip grip, and the guide pipe tip allows great visibility. The upper body is made of plastic while the grip and tip is made of metal.